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1 /* |
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2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com> |
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3 * See LICENSE file for license details. |
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4 */ |
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5 |
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6 #include <stdarg.h> |
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7 #include <stdio.h> |
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8 #include <stdlib.h> |
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9 |
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10 #include <X11/cursorfont.h> |
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11 #include <X11/Xatom.h> |
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12 #include <X11/Xproto.h> |
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13 |
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14 #include "wm.h" |
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15 |
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16 Display *dpy; |
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17 Window root; |
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18 XRectangle rect; |
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19 int screen, sel_screen; |
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20 Atom wm_atom[WMLast]; |
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21 Atom net_atom[NetLast]; |
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22 Cursor cursor[CurLast]; |
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23 unsigned int kmask, numlock_mask; |
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24 Pixmap pmap; |
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25 |
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26 enum { WM_PROTOCOL_DELWIN = 1 }; |
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27 |
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28 static Bool other_wm_running; |
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29 static int (*x_error_handler) (Display *, XErrorEvent *); |
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30 static char version[] = "gridwm - " VERSION ", (C)opyright MMVI Anselm R. Garbe\n"; |
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31 |
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32 static void |
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33 usage() |
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34 { |
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35 fputs("usage: gridwm [-v]\n", stderr); |
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36 exit(1); |
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37 } |
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38 |
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39 void |
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40 error(char *errstr, ...) { |
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41 va_list ap; |
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42 va_start(ap, errstr); |
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43 vfprintf(stderr, errstr, ap); |
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44 va_end(ap); |
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45 exit(1); |
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46 } |
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47 |
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48 static void |
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49 scan_wins() |
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50 { |
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51 unsigned int i, num; |
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52 Window *wins; |
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53 XWindowAttributes wa; |
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54 Window d1, d2; |
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55 |
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56 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) { |
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57 for(i = 0; i < num; i++) { |
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58 if(!XGetWindowAttributes(dpy, wins[i], &wa)) |
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59 continue; |
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60 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1)) |
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61 continue; |
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62 if(wa.map_state == IsViewable) |
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63 /*manage*/; |
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64 } |
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65 } |
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66 if(wins) |
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67 XFree(wins); |
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68 } |
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69 |
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70 static int |
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71 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop) |
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72 { |
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73 Atom real; |
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74 int format; |
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75 unsigned long res, extra; |
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76 int status; |
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77 |
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78 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format, |
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79 &res, &extra, prop); |
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80 |
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81 if(status != Success || *prop == 0) { |
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82 return 0; |
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83 } |
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84 if(res == 0) { |
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85 free((void *) *prop); |
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86 } |
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87 return res; |
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88 } |
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89 |
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90 int |
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91 win_proto(Window w) |
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92 { |
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93 Atom *protocols; |
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94 long res; |
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95 int protos = 0; |
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96 int i; |
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97 |
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98 res = win_property(w, wm_atom[WMProtocols], XA_ATOM, 20L, |
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99 ((unsigned char **) &protocols)); |
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100 if(res <= 0) { |
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101 return protos; |
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102 } |
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103 for(i = 0; i < res; i++) { |
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104 if(protocols[i] == wm_atom[WMDelete]) |
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105 protos |= WM_PROTOCOL_DELWIN; |
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106 } |
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107 free((char *) protocols); |
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108 return protos; |
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109 } |
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110 |
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111 /* |
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112 * There's no way to check accesses to destroyed windows, thus |
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113 * those cases are ignored (especially on UnmapNotify's). |
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114 * Other types of errors call Xlib's default error handler, which |
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115 * calls exit(). |
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116 */ |
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117 static int |
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118 error_handler(Display *dpy, XErrorEvent *error) |
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119 { |
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120 if(error->error_code == BadWindow |
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121 || (error->request_code == X_SetInputFocus |
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122 && error->error_code == BadMatch) |
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123 || (error->request_code == X_PolyText8 |
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124 && error->error_code == BadDrawable) |
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125 || (error->request_code == X_PolyFillRectangle |
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126 && error->error_code == BadDrawable) |
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127 || (error->request_code == X_PolySegment |
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128 && error->error_code == BadDrawable) |
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129 || (error->request_code == X_ConfigureWindow |
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130 && error->error_code == BadMatch) |
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131 || (error->request_code == X_GrabKey |
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132 && error->error_code == BadAccess)) |
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133 return 0; |
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134 fprintf(stderr, "gridwm: fatal error: request code=%d, error code=%d\n", |
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135 error->request_code, error->error_code); |
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136 return x_error_handler(dpy, error); /* may call exit() */ |
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137 } |
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138 |
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139 /* |
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140 * Startup Error handler to check if another window manager |
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141 * is already running. |
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142 */ |
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143 static int |
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144 startup_error_handler(Display *dpy, XErrorEvent *error) |
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145 { |
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146 other_wm_running = True; |
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147 return -1; |
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148 } |
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149 |
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150 static void |
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151 init_lock_keys() |
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152 { |
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153 XModifierKeymap *modmap; |
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154 KeyCode numlock; |
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155 int i; |
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156 static int masks[] = { |
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157 ShiftMask, LockMask, ControlMask, Mod1Mask, |
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158 Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask |
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159 }; |
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160 |
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161 numlock_mask = 0; |
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162 modmap = XGetModifierMapping(dpy); |
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163 numlock = XKeysymToKeycode(dpy, XStringToKeysym("Num_Lock")); |
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164 |
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165 if(modmap && modmap->max_keypermod > 0) { |
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166 int max = (sizeof(masks) / sizeof(int)) * modmap->max_keypermod; |
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167 for(i = 0; i < max; i++) |
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168 if(numlock && (modmap->modifiermap[i] == numlock)) |
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169 numlock_mask = masks[i / modmap->max_keypermod]; |
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170 } |
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171 XFreeModifiermap(modmap); |
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172 |
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173 kmask = 255 & ~(numlock_mask | LockMask); |
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174 } |
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175 |
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176 static void |
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177 cleanup() |
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178 { |
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179 /* |
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180 Client *c; |
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181 for(c=client; c; c=c->next) |
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182 reparent_client(c, root, c->sel->rect.x, c->sel->rect.y); |
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183 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime); |
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184 */ |
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185 } |
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186 |
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187 int |
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188 main(int argc, char *argv[]) |
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189 { |
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190 int i; |
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191 XSetWindowAttributes wa; |
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192 unsigned int mask; |
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193 Window w; |
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194 |
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195 /* command line args */ |
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196 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) { |
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197 switch (argv[i][1]) { |
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198 case 'v': |
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199 fprintf(stdout, "%s", version); |
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200 exit(0); |
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201 break; |
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202 default: |
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203 usage(); |
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204 break; |
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205 } |
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206 } |
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207 |
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208 dpy = XOpenDisplay(0); |
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209 if(!dpy) |
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210 error("gridwm: cannot connect X server\n"); |
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211 |
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212 screen = DefaultScreen(dpy); |
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213 root = RootWindow(dpy, screen); |
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214 |
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215 /* check if another WM is already running */ |
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216 other_wm_running = False; |
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217 XSetErrorHandler(startup_error_handler); |
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218 /* this causes an error if some other WM is running */ |
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219 XSelectInput(dpy, root, SubstructureRedirectMask); |
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220 XSync(dpy, False); |
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221 |
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222 if(other_wm_running) |
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223 error("gridwm: another window manager is already running\n"); |
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224 |
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225 rect.x = rect.y = 0; |
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226 rect.width = DisplayWidth(dpy, screen); |
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227 rect.height = DisplayHeight(dpy, screen); |
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228 sel_screen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask); |
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229 |
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230 XSetErrorHandler(0); |
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231 x_error_handler = XSetErrorHandler(error_handler); |
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232 |
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233 /* init atoms */ |
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234 wm_atom[WMState] = XInternAtom(dpy, "WM_STATE", False); |
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235 wm_atom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False); |
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236 wm_atom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False); |
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237 net_atom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False); |
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238 net_atom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False); |
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239 |
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240 XChangeProperty(dpy, root, net_atom[NetSupported], XA_ATOM, 32, |
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241 PropModeReplace, (unsigned char *) net_atom, NetLast); |
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242 |
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243 |
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244 /* init cursors */ |
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245 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr); |
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246 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing); |
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247 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur); |
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248 |
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249 init_lock_keys(); |
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250 |
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251 pmap = XCreatePixmap(dpy, root, rect.width, rect.height, |
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252 DefaultDepth(dpy, screen)); |
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253 |
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254 wa.event_mask = SubstructureRedirectMask | EnterWindowMask | LeaveWindowMask; |
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255 wa.cursor = cursor[CurNormal]; |
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256 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa); |
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257 |
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258 scan_wins(); |
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259 |
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260 cleanup(); |
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261 XCloseDisplay(dpy); |
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262 |
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263 return 0; |
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264 } |